Progress is fine, but it's gone on for too long.: Airplane engine parts

Thursday, July 30, 2026


	Cyril Donaldson and George LeCain, Tool Design, Second edition, McGraw Hill, 1957

Interesting, the mix of fractional and decimal measurements.

AnonymousJuly 30, 2026 at 5:17 PM
It looks to me that the fractions apply to castings, and the decimals to machining carried out thereafter. Main conrod for a 7-cylinder radial? D.
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